Ceramics International最新文献

Influence of additional liquid layer on growth dynamics of TFA-MOD YBa₂Cu₃O7-δ thin films 附加液层对TFA-MOD YBa₂Cu₃O7-δ薄膜生长动力学的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.149

Yixue Fu , Xinghang Zhou , Jiaqi Tao , Fuhao Liu , Zhiyong Liu , Difan Zhou , Chuanbing Cai

{"title":"Influence of additional liquid layer on growth dynamics of TFA-MOD YBa₂Cu₃O7-δ thin films","authors":"Yixue Fu , Xinghang Zhou , Jiaqi Tao , Fuhao Liu , Zhiyong Liu , Difan Zhou , Chuanbing Cai","doi":"10.1016/j.ceramint.2025.02.149","DOIUrl":"10.1016/j.ceramint.2025.02.149","url":null,"abstract":"<div><div>Transient liquid phase has recently been proved to assist the ultra-fast nucleation of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> (YBCO) thin films/tapes during the chemical solution deposition process making it a promising technique for processing high temperature superconducting tapes. In this work, we attempted to introduce the liquid rich environment into the TFA-YBCO process by coating an additional Ba-Cu-O (BCO) layer in advance, and systematically investigated its influence on nucleation dynamics by adjusting key parameters including temperature and oxygen partial pressure. The results show that due to intermediate phase coarsening, the presence of a nonuniform distribution of liquid-phase leads to higher local supersaturation, thereby promoting mixed <em>a</em>-axis and <em>c</em>-axis growth. Under rapid heating conditions, a large number of liquid phases form, reducing the relative supersaturation and minimizing particle coarsening. This reduces the growth time from 90 min to 40 min and results in a dense film with highly oriented <em>c</em>-axis orientation. In addition, we established a liquid-phase diffusion model based on the evolution of the intermediate phase, revealing the effects of conventional and rapid heating on liquid-phase diffusion.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19795-19803"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Fe-Mg co-incorporation on the mechanical properties, biodegradation, osteogenesis and immunoregulation in vitro of 3D printed biphasic calcium phosphate bioceramics Fe-Mg共掺入对体外3D打印双相磷酸钙生物陶瓷力学性能、生物降解、成骨和免疫调节的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.146

Dong Dong , Haijun Su , Jian Xing , Xiang Li , Zhonglin Shen , Hao Jiang , Minghui Yu , Min Guo , Zhuo Zhang , Pengfei Wang

{"title":"Effect of Fe-Mg co-incorporation on the mechanical properties, biodegradation, osteogenesis and immunoregulation in vitro of 3D printed biphasic calcium phosphate bioceramics","authors":"Dong Dong , Haijun Su , Jian Xing , Xiang Li , Zhonglin Shen , Hao Jiang , Minghui Yu , Min Guo , Zhuo Zhang , Pengfei Wang","doi":"10.1016/j.ceramint.2025.02.146","DOIUrl":"10.1016/j.ceramint.2025.02.146","url":null,"abstract":"<div><div>Introducing functional elements to biomaterials is a widely recognized effective strategy to enhance their biological properties. In this study, iron (Fe) and magnesium oxide (MgO) were co-incorporated into biphasic calcium phosphate (BCP) bioceramics fabricated by vat polymerization (VPP) technique to regulate the microstructure, mechanical properties, biodegradation, biocompatibility and bioactivity. Our results showed the decrease of curing depth of BCP slurries was mainly owing to the addition of Fe. The incorporation of Fe increased the grain size, but co-incorporation of MgO decreased the grain size again. The co-incorporation of Fe and MgO increased the porosity of BCP scaffolds, and decreased their compressive strength. However, the single addition of Fe increased the compressive strength. The introducing of Fe suppressed the degradation of BCP, but Fe-Mg co-doped BCP showed faster degradation than BCP with Fe alone. However, the addition of MgO diminished the formation of bioactive apatite. <em>In vitro</em>, Fe-Mg co-doped BCP showed good biocompatibility, and 0.5Fe2Mg-BCP showed the best capacity on promoting osteogenic differentiation of MC3T3-E1. Fe-Mg co-doped BCP obviously regulated the RAW 264.7 polarization, inflammatory and anti-inflammatory activities which are favor of osteogenesis. This work demonstrated that the co-doping of Fe<sup>2+</sup> and Mg<sup>2+</sup> was favor of promoting osteogenic differentiation and Fe-Mg co-doped BCP was a promising biomaterial for bone regeneration.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19828-19844"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative study of electrochemical supercapacitor performance Among various nickel phases: Hydroxide, oxide, and sulfide 电化学超级电容器在不同镍相：氢氧化物、氧化物和硫化物中的性能比较研究

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.229

Sreenivasa Kumar Godlaveeti , Adel El-marghany , Ramamanohar Reddy Nagireddy , Sreedevi Gedi , Rajababu Chintaparty

{"title":"Comparative study of electrochemical supercapacitor performance Among various nickel phases: Hydroxide, oxide, and sulfide","authors":"Sreenivasa Kumar Godlaveeti , Adel El-marghany , Ramamanohar Reddy Nagireddy , Sreedevi Gedi , Rajababu Chintaparty","doi":"10.1016/j.ceramint.2025.02.229","DOIUrl":"10.1016/j.ceramint.2025.02.229","url":null,"abstract":"<div><div>The unique electrochemical properties of metal sulfides have made them highly attractive for use in supercapacitor technologies. This study focuses on the electrochemical behaviour of nickel-based materials namely nickel hydroxide (β-Ni(OH)<sub>2</sub>), nickel oxide (NiO), and nickel sulfide (NiS) synthesized via a simple hydrothermal approach. Structural analysis was performed using X-ray diffraction (XRD), while field emission scanning electron microscopy (FE-SEM), field emission transmission electron microscopy (FE-TEM) and energy-dispersive X-ray spectroscopy (EDAX) provided insights into the morphology and elemental composition of each material. The surface area, pore volume and pore diameter were calculated from Brunauer Emmett Teller (BET) instrument. The electrochemical performance of these synthesized compounds was tested in supercapacitor applications through cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), electrochemical impedance spectroscopy (EIS) and stability performance in a three-electrode system. Notably, NiS outperformed other nickel phases, achieving a specific capacitance of approximately 1066 F/g at a current density of 5 A/g in a 3 M KOH electrolyte. The findings highlight the potential advantages of metal sulfides over metal oxides and hydroxides in supercapacitor applications, attributed to their higher conductivity and electrochemical activity, making metal sulfides highly promising for energy storage solutions.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20620-20627"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Daylight-activated recoverable mechano-luminescence material SrGa12O19: Tb3+ for enhanced speed detection applications 日光激活的可恢复机械发光材料SrGa12O19: Tb3+，用于增强速度检测应用

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.187

Jiyun Wang , Zhichao Liu , Bowen Zhang , Yongfeng Liu , Linglu Kuang , Qian Guo , Man Wang , Wei Tian , Jahangeer Ahmed , Min Zhou

{"title":"Daylight-activated recoverable mechano-luminescence material SrGa12O19: Tb3+ for enhanced speed detection applications","authors":"Jiyun Wang , Zhichao Liu , Bowen Zhang , Yongfeng Liu , Linglu Kuang , Qian Guo , Man Wang , Wei Tian , Jahangeer Ahmed , Min Zhou","doi":"10.1016/j.ceramint.2025.02.187","DOIUrl":"10.1016/j.ceramint.2025.02.187","url":null,"abstract":"<div><div>Mechano-luminescence (ML) materials exhibit significant potential in anti-counterfeit coding, structural detection, and mechanical sensing due to their unique force-light conversion properties. However, current research predominantly focuses on recoverable ultraviolet irradiation and triboelectric effects within non-centrosymmetric crystal structures. In this study, we have successfully synthesized a doped centrosymmetric crystal structure, SrGa<sub>12</sub>O<sub>19</sub> (SGO): Tb<sup>3+</sup>, which displays green ML property and is capable of recovery under daylight irradiation. Furthermore, co-doping with Sb<sup>3+</sup> ions allowed a 13-fold increase in the trap concentration that significantly enhanced its long persistent luminescence (LPL) performance. Temperature-dependent ML properties, along with density functional theory calculations, provide additional confirmation of the crucial role played by trap structure in the conversion process of force into light. Additionally, a dual-function film with ML and LPL effects has been developed through coupling the polydimethylsiloxane and SGO: Tb<sup>3+</sup>, Sb<sup>3+</sup> phosphors, which has been effectively applied to warning speed measurement on hazardous roads at night. This work thus extended the design strategies and innovative applications of emergent ML materials.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20221-20229"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photoluminescence properties and energy transfer mechanism of Eu3+-Tb3+-Pr3+ triple-doped Gd2O3 phosphors Eu3+-Tb3+-Pr3+三掺杂Gd2O3荧光粉的光致发光性能及能量传递机理

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.188

Chang Sun, Liping Lu, Si Wu, Haiying Sun, Xiaoyun Mi

{"title":"Photoluminescence properties and energy transfer mechanism of Eu3+-Tb3+-Pr3+ triple-doped Gd2O3 phosphors","authors":"Chang Sun, Liping Lu, Si Wu, Haiying Sun, Xiaoyun Mi","doi":"10.1016/j.ceramint.2025.02.188","DOIUrl":"10.1016/j.ceramint.2025.02.188","url":null,"abstract":"<div><div>In this paper, Eu<sup>3+</sup>-Tb<sup>3+</sup>-Pr<sup>3+</sup> triple-doped Gd<sub>2</sub>O<sub>3</sub> phosphors based on solar-blind ultraviolet band response were successfully prepared by the hydrothermal method. All the phosphor samples exhibit excellent crystallinity and the crystal structures are cubic crystal phases. The doping of Tb<sup>3+</sup> and Pr<sup>3+</sup> significantly enhance the luminescence intensity of Gd<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup>. This is attributed that <sup>5</sup>D<sub>4</sub> energy level of Tb<sup>3+</sup> and <sup>3</sup>P<sub>0</sub> energy level of Pr<sup>3+</sup> can transfer energy to <sup>5</sup>D<sub>1</sub> energy level of Eu<sup>3+</sup>. The phosphor is effectively excited at 265 nm with the optimal luminescence intensity when the doping concentrations of Eu<sup>3+</sup>, Tb<sup>3+</sup>, and Pr<sup>3+</sup> are 4 mol%, 0.075 mol%, and 0.03 mol%, respectively. Fluorescence lifetime tests show that Tb<sup>3+</sup> and Pr<sup>3+</sup> as sensitizers could effectively enhance the red light emission of Eu<sup>3+</sup> through quadrupole-quadrupole and dipole-dipole interactions, respectively. In addition, the doping of Tb<sup>3+</sup> and Pr<sup>3+</sup> can further improve the thermal stability of Gd<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup>. And the emission intensity of Eu<sup>3+</sup>-Tb<sup>3+</sup>-Pr<sup>3+</sup> triple-doped Gd<sub>2</sub>O<sub>3</sub> phosphors at 428 K is 61.94 % of that at room temperature, which is much larger than that of 41.32 % for Gd<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup>. Therefore, Gd<sub>2</sub>O<sub>3</sub>:Eu<sup>3+</sup>, Tb<sup>3+</sup>, Pr<sup>3+</sup> phosphors exhibit potential applications in solar-blind ultraviolet band detection field, meriting further research and exploration.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20230-20238"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Piezoelectric effect-assisted TiO2/BaTiO3 bicomponent for enhanced photocatalytic degradation of xanthate 压电效应辅助TiO2/BaTiO3双组分增强光催化降解黄药

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.213

Meng Li , Weiji Sun , Yiming Li , Lang Liu

{"title":"Piezoelectric effect-assisted TiO2/BaTiO3 bicomponent for enhanced photocatalytic degradation of xanthate","authors":"Meng Li , Weiji Sun , Yiming Li , Lang Liu","doi":"10.1016/j.ceramint.2025.02.213","DOIUrl":"10.1016/j.ceramint.2025.02.213","url":null,"abstract":"<div><div>Photocatalytic degradation of organic pollution has the characteristics of green, environmental protection, high efficiency and economy, and is considered as the most promising water treatment technology at present. In this work, the piezoelectric TiO<sub>2</sub>/BaTiO<sub>3</sub> bicomponent photocatalyst is constructed by solvothermal method. The trigger of mechanical energy as a driving force induces the piezoelectric material BaTiO<sub>3</sub> to release bound charges, which promotes the separation of photogenerated electrons and holes, thus accelerating the photocatalytic degradation reaction. Moreover, the heterojunction constructed between TiO<sub>2</sub> and BaTiO<sub>3</sub> promotes photo-induced carrier separation and improves the generation efficiency of xanthate degrading active substances. The photocatalytic degradation efficiency of xanthate reached 98.3 % after 50 min of illumination, and the TiO<sub>2</sub>/BaTiO<sub>3</sub> photocatalyst is recoverable and highly reusable. This research opens up a new way for the degradation of mineral processing wastewater by piezoelectric effect and photocatalysis technology.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20444-20451"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flexible refractory castables based on the Al2O3-MgO-TiO2 system 基于Al2O3-MgO-TiO2体系的柔性耐火浇注料

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.251

B. Reitmann , O.H. Borges , L.O.Z. Falsetti , C. Pagliosa Neto , V.C. Pandolfelli

{"title":"Flexible refractory castables based on the Al2O3-MgO-TiO2 system","authors":"B. Reitmann , O.H. Borges , L.O.Z. Falsetti , C. Pagliosa Neto , V.C. Pandolfelli","doi":"10.1016/j.ceramint.2025.02.251","DOIUrl":"10.1016/j.ceramint.2025.02.251","url":null,"abstract":"<div><div>Toughening by <em>in-situ</em> phase formation is highly desired for high-performance refractories, as it enhances their thermomechanical properties (<em>e.g.</em> thermal shock damage resistance). For this purpose, pseudobrookite and intermediary spinels are promising phases due to their thermal expansion mismatch, resulting in self-microcracking. Aiming to develop highly flexible refractory castables, compositions based on the Al<sub>2</sub>O<sub>3</sub>-MgO-TiO<sub>2</sub> system were formulated with the aid of computational thermodynamics. Of the most promising compositions, five of them were experimentally produced and had their thermomechanical and physical properties assessed by X-ray diffraction, <em>in-situ</em> elastic modulus, thermal shock damage analysis (ΔT = 1000 °C) and scanning electron microscopy. Results pointed out that small titania contents led to a positive effect on microstructure densification, improving the mechanical performance of the refractories and generation of phases that induce microcracking upon cooling, enhancing the thermal shock damage resistance. Nevertheless, an excess of TiO<sub>2</sub> led to extensive cracking and cohesion loss in the refractory matrix.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 20822-20829"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Superior high-temperature lubrication of MoS2/Ta/WB2 nanomultilayer film MoS2/Ta/WB2纳米多层膜优越的高温润滑性能

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.156

Guoyuan Hou , Zhenrong Gao , Xin Fan , Mingjun Cui , Siming Ren

引用次数: 0

Effect of SiC-coated diamond and its size on the relative density and thermal conductivity of diamond/W composites sic包覆金刚石及其尺寸对金刚石/W复合材料相对密度和导热系数的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.147

Zhenya Cao , Yongsheng Xue , Zhizhong Jiang , Jialong Sun

{"title":"Effect of SiC-coated diamond and its size on the relative density and thermal conductivity of diamond/W composites","authors":"Zhenya Cao , Yongsheng Xue , Zhizhong Jiang , Jialong Sun","doi":"10.1016/j.ceramint.2025.02.147","DOIUrl":"10.1016/j.ceramint.2025.02.147","url":null,"abstract":"<div><div>In this study, SiC coating was deposited on the diamond surfaces by magnetron sputtering, and SiC-coated diamonds with a diamond size of 100–400 μm were employed to prepared diamond(SiC)/W composite for improving the interface bonding and thermal conductivity. The effects of SiC coating and diamond size on the interfacial bonding, evolution of interfacial structure and thermal conductivity of composite were investigated. The results showed that a relatively homogeneous SiC coating was formed after 16h of deposition at a sputtering power of 150W. At a diamond size of 200 μm, when the diamond addition was lower than 40 vol%, through W-SiC interface reaction, SiC coating can improve the interface bonding, and increase the relative density and thermal conductivity of composites. As the diamond addition increased to 50-60 vol%, the enhanced degree of W-SiC reaction would lead to the broken and migration of WC-SiC layer under the action of sintering temperature, pressure and local Joule heat, causing an increase in interface defects and a decrease in thermal conductivity of composites. 40 vol%diamond(SiC)/W composite achieved the higher thermal conductivity of 152 W m<sup>−1</sup> K<sup>−1</sup>. Increasing the diamond size would help increase the densification and heat transfer efficiency of composite, and 40 vol%diamond(SiC)/W composite with a diamond size of 400 μm possessed the maximum relative density and thermal conductivity, i.e. 96.78 % and 225 W m<sup>−1</sup> K<sup>−1</sup>.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19815-19827"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Combustion synthesis of ZrCN with different C/N ratios from Zr-C granular mixtures in nitrogen flow 氮流中Zr-C颗粒混合物燃烧合成不同C/N比的ZrCN

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-06-01 DOI: 10.1016/j.ceramint.2025.02.160

D.S. Vasilyev, B.S. Seplyarskii, R.A. Kochetkov, D. Yu Kovalev

{"title":"Combustion synthesis of ZrCN with different C/N ratios from Zr-C granular mixtures in nitrogen flow","authors":"D.S. Vasilyev, B.S. Seplyarskii, R.A. Kochetkov, D. Yu Kovalev","doi":"10.1016/j.ceramint.2025.02.160","DOIUrl":"10.1016/j.ceramint.2025.02.160","url":null,"abstract":"<div><div>Here we report the preparation of zirconium carbonitride Zr(C,N) in a single technological operation from Zr-C granular mixtures by combustion synthesis in nitrogen flow. Macrokinetic features of combustion of granular mixtures Zr+0.5C and (Zr+0.5C) + x‧ZrCN in nitrogen at flow up to 1500 l/h and pressure drops up to 0.2 MPa have been determined. A physical model for the combustion of exothermic metal-carbon granular mixtures in nitrogen is proposed. It was found that the combustion of granular mixtures in a nitrogen flow of more than 500 l/h occurs by a convective mechanism in which the apparent velocity of combustion is determined by the ignition of granules from the surface due to the reaction of zirconium with nitrogen. Using the convective combustion model, the amount of nitrogen passing through the ignition front and absorbed beyond it was calculated. X-ray diffraction (XRD) analysis showed that the combustion products of the Zr+0.5C and (Zr+0.5C) + x‧ZrCN mixtures in a nitrogen flow are non-stoichiometric zirconium carbonitrides. The unit cell parameters of the zirconium carbonitrides were refined by full profile analysis and their stoichiometric composition was determined using Vegard's law. According to XRD data, the maximum nitrogen content (7.5 wt%) was obtained for the composition (Zr+0.5C) + 20ZrCN at a nitrogen flow of 1000 l/h.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 15","pages":"Pages 19942-19951"},"PeriodicalIF":5.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0